Table 3 Within-season average outdoor concentrations at homes and central-site monitor
| Â | Â | Overall | Summer | Winter | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Pollutant | Location | N | Mean (SD) | Median | N | Mean (SD) | Median | N | Mean (SD) | Median |
PM 2.5 | Outdoor | 59 | 13.9 (5.0) | 12.5 | 35 | 15.1 (5.7) | 13.8 | 24 | 12.2 (3.1) | 13.8 |
   (μg/m3) | Central Site | 59 | 15.4 (6.1) | 14.6 | 35 | 17.0 (7.1) | 14.9 | 24 | 13.1 (3.4) | 12.9 |
EC | Outdoor | 58 | 0.52 (0.41) | 0.46 | 34 | 0.51 (0.51) | 0.39 | 24 | 0.54 (0.18) | 0.56 |
   (μg/m3) | Central Site | 58 | 0.86 (0.34) | 0.83 | 34 | 1.01 (0.31) | 1.01 | 24 | 0.65 (0.27) | 0.61 |
NO 2 | Outdoor | 52 | 17.2 (6.0) | 16.8 | 36 | 17.7 (6.4) | 17.3 | 16 | 16.3 (4.9) | 15.5 |
   (ppb) | Central Site | 52 | 18.4 (3.9) | 17.9 | 36 | 17.3 (3.5) | 18.0 | 16 | 21.0 (3.4) | 21.3 |